src/mesa/drivers/dri/r300/r300_ioctl.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.
   3 Copyright (C) 2004 Nicolai Haehnle.
   4 All Rights Reserved.
   5
   6 The Weather Channel (TM) funded Tungsten Graphics to develop the
   7 initial release of the Radeon 8500 driver under the XFree86 license.
   8 This notice must be preserved.
   9
  10 Permission is hereby granted, free of charge, to any person obtaining
  11 a copy of this software and associated documentation files (the
  12 "Software"), to deal in the Software without restriction, including
  13 without limitation the rights to use, copy, modify, merge, publish,
  14 distribute, sublicense, and/or sell copies of the Software, and to
  15 permit persons to whom the Software is furnished to do so, subject to
  16 the following conditions:
  17
  18 The above copyright notice and this permission notice (including the
  19 next paragraph) shall be included in all copies or substantial
  20 portions of the Software.
  21
  22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  25 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  26 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 **************************************************************************/
  31
  32 /*
  33  * Authors:
  34  *   Keith Whitwell <keith@tungstengraphics.com>
  35  *   Nicolai Haehnle <prefect_@gmx.net>
  36  */
  37
  38 #include <sched.h>
  39 #include <errno.h>
  40
  41 #include "glheader.h"
  42 #include "imports.h"
  43 #include "macros.h"
  44 #include "context.h"
  45 #include "swrast/swrast.h"
  46
  47 #include "r300_context.h"
  48 #include "radeon_ioctl.h"
  49 #include "r300_ioctl.h"
  50 #include "r300_cmdbuf.h"
  51 #include "r300_state.h"
  52 #include "r300_program.h"
  53 #include "radeon_reg.h"
  54
  55 #include "vblank.h"
  56
  57
  58 #define CLEARBUFFER_COLOR       0x1
  59 #define CLEARBUFFER_DEPTH       0x2
  60
  61 static void r300ClearBuffer(r300ContextPtr r300, int flags, int buffer)
  62 {
  63         GLcontext* ctx = r300->radeon.glCtx;
  64         __DRIdrawablePrivate *dPriv = r300->radeon.dri.drawable;
  65         int i;
  66         GLuint cboffset, cbpitch;
  67         drm_r300_cmd_header_t* cmd;
  68
  69         if (RADEON_DEBUG & DEBUG_IOCTL)
  70                 fprintf(stderr, "%s: %s buffer (%i,%i %ix%i)\n",
  71                         __FUNCTION__, buffer ? "back" : "front",
  72                         dPriv->x, dPriv->y, dPriv->w, dPriv->h);
  73
  74         if (buffer) {
  75                 cboffset = r300->radeon.radeonScreen->backOffset;
  76                 cbpitch = r300->radeon.radeonScreen->backPitch;
  77         } else {
  78                 cboffset = r300->radeon.radeonScreen->frontOffset;
  79                 cbpitch = r300->radeon.radeonScreen->frontPitch;
  80         }
  81
  82         cboffset += r300->radeon.radeonScreen->fbLocation;
  83
  84         R300_STATECHANGE(r300, vir[0]);
  85         ((drm_r300_cmd_header_t*)r300->hw.vir[0].cmd)->unchecked_state.count = 1;
  86         r300->hw.vir[0].cmd[1] = 0x21030003;
  87
  88         R300_STATECHANGE(r300, vir[1]);
  89         ((drm_r300_cmd_header_t*)r300->hw.vir[1].cmd)->unchecked_state.count = 1;
  90         r300->hw.vir[1].cmd[1] = 0xF688F688;
  91
  92         R300_STATECHANGE(r300, vic);
  93         r300->hw.vic.cmd[R300_VIC_CNTL_0] = 0x00000001;
  94         r300->hw.vic.cmd[R300_VIC_CNTL_1] = 0x00000405;
  95
  96         R300_STATECHANGE(r300, vof);
  97         r300->hw.vof.cmd[R300_VOF_CNTL_0] = R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT
  98                                 | R300_VAP_OUTPUT_VTX_FMT_0__COLOR_PRESENT;
  99         r300->hw.vof.cmd[R300_VOF_CNTL_1] = 0; /* no textures */
 100
 101         R300_STATECHANGE(r300, txe);
 102         r300->hw.txe.cmd[R300_TXE_ENABLE] = 0;
 103
 104         R300_STATECHANGE(r300, vpt);
 105         r300->hw.vpt.cmd[R300_VPT_XSCALE] = r300PackFloat32(1.0);
 106         r300->hw.vpt.cmd[R300_VPT_XOFFSET] = r300PackFloat32(dPriv->x);
 107         r300->hw.vpt.cmd[R300_VPT_YSCALE] = r300PackFloat32(1.0);
 108         r300->hw.vpt.cmd[R300_VPT_YOFFSET] = r300PackFloat32(dPriv->y);
 109         r300->hw.vpt.cmd[R300_VPT_ZSCALE] = r300PackFloat32(1.0);
 110         r300->hw.vpt.cmd[R300_VPT_ZOFFSET] = r300PackFloat32(0.0);
 111
 112         R300_STATECHANGE(r300, at);
 113         r300->hw.at.cmd[R300_AT_ALPHA_TEST] = 0;
 114
 115         R300_STATECHANGE(r300, bld);
 116         r300->hw.bld.cmd[R300_BLD_CBLEND] = 0;
 117         r300->hw.bld.cmd[R300_BLD_ABLEND] = 0;
 118
 119         R300_STATECHANGE(r300, cb);
 120         r300->hw.cb.cmd[R300_CB_OFFSET] = cboffset;
 121         r300->hw.cb.cmd[R300_CB_PITCH] = cbpitch | R300_COLOR_UNKNOWN_22_23;
 122
 123         R300_STATECHANGE(r300, unk221C);
 124         r300->hw.unk221C.cmd[1] = R300_221C_CLEAR;
 125
 126         R300_STATECHANGE(r300, ps);
 127         r300->hw.ps.cmd[R300_PS_POINTSIZE] =
 128                 ((dPriv->w * 6) << R300_POINTSIZE_X_SHIFT) |
 129                 ((dPriv->h * 6) << R300_POINTSIZE_Y_SHIFT);
 130
 131         R300_STATECHANGE(r300, ri);
 132         for(i = 1; i <= 8; ++i)
 133                 r300->hw.ri.cmd[i] = R300_RS_INTERP_USED;
 134
 135         R300_STATECHANGE(r300, rc);
 136         /* The second constant is needed to get glxgears display anything .. */
 137         r300->hw.rc.cmd[1] = R300_RS_CNTL_0_UNKNOWN_7 | R300_RS_CNTL_0_UNKNOWN_18;
 138         r300->hw.rc.cmd[2] = 0;
 139
 140         R300_STATECHANGE(r300, rr);
 141         ((drm_r300_cmd_header_t*)r300->hw.rr.cmd)->unchecked_state.count = 1;
 142         r300->hw.rr.cmd[1] = 0x00004000;
 143
 144         R300_STATECHANGE(r300, cmk);
 145         if (flags & CLEARBUFFER_COLOR) {
 146                 r300->hw.cmk.cmd[R300_CMK_COLORMASK] =
 147                         (ctx->Color.ColorMask[BCOMP] ? R300_COLORMASK0_B : 0) |
 148                         (ctx->Color.ColorMask[GCOMP] ? R300_COLORMASK0_G : 0) |
 149                         (ctx->Color.ColorMask[RCOMP] ? R300_COLORMASK0_R : 0) |
 150                         (ctx->Color.ColorMask[ACOMP] ? R300_COLORMASK0_A : 0);
 151         } else {
 152                 r300->hw.cmk.cmd[R300_CMK_COLORMASK] = 0;
 153         }
 154
 155         R300_STATECHANGE(r300, fp);
 156         r300->hw.fp.cmd[R300_FP_CNTL0] = 0; /* 1 pass, no textures */
 157         r300->hw.fp.cmd[R300_FP_CNTL1] = 0; /* no temporaries */
 158         r300->hw.fp.cmd[R300_FP_CNTL2] = 0; /* no offset, one ALU instr */
 159         r300->hw.fp.cmd[R300_FP_NODE0] = 0;
 160         r300->hw.fp.cmd[R300_FP_NODE1] = 0;
 161         r300->hw.fp.cmd[R300_FP_NODE2] = 0;
 162         r300->hw.fp.cmd[R300_FP_NODE3] = R300_PFS_NODE_LAST_NODE;
 163
 164         R300_STATECHANGE(r300, fpi[0]);
 165         R300_STATECHANGE(r300, fpi[1]);
 166         R300_STATECHANGE(r300, fpi[2]);
 167         R300_STATECHANGE(r300, fpi[3]);
 168         ((drm_r300_cmd_header_t*)r300->hw.fpi[0].cmd)->unchecked_state.count = 1;
 169         ((drm_r300_cmd_header_t*)r300->hw.fpi[1].cmd)->unchecked_state.count = 1;
 170         ((drm_r300_cmd_header_t*)r300->hw.fpi[2].cmd)->unchecked_state.count = 1;
 171         ((drm_r300_cmd_header_t*)r300->hw.fpi[3].cmd)->unchecked_state.count = 1;
 172
 173         /* MOV o0, t0 */
 174         r300->hw.fpi[0].cmd[1] = FP_INSTRC(MAD, FP_ARGC(SRC0C_XYZ), FP_ARGC(ONE), FP_ARGC(ZERO));
 175         r300->hw.fpi[1].cmd[1] = FP_SELC(0,NO,XYZ,FP_TMP(0),0,0);
 176         r300->hw.fpi[2].cmd[1] = FP_INSTRA(MAD, FP_ARGA(SRC0A), FP_ARGA(ONE), FP_ARGA(ZERO));
 177         r300->hw.fpi[3].cmd[1] = FP_SELA(0,NO,W,FP_TMP(0),0,0);
 178
 179         R300_STATECHANGE(r300, pvs);
 180         r300->hw.pvs.cmd[R300_PVS_CNTL_1] =
 181                 (0 << R300_PVS_CNTL_1_PROGRAM_START_SHIFT) |
 182                 (0 << R300_PVS_CNTL_1_UNKNOWN_SHIFT) |
 183                 (1 << R300_PVS_CNTL_1_PROGRAM_END_SHIFT);
 184         r300->hw.pvs.cmd[R300_PVS_CNTL_2] = 0; /* no parameters */
 185         r300->hw.pvs.cmd[R300_PVS_CNTL_3] =
 186                 (1 << R300_PVS_CNTL_3_PROGRAM_UNKNOWN_SHIFT);
 187
 188         R300_STATECHANGE(r300, vpi);
 189         ((drm_r300_cmd_header_t*)r300->hw.vpi.cmd)->unchecked_state.count = 8;
 190
 191         /* MOV o0, i0; */
 192         r300->hw.vpi.cmd[1] = VP_OUT(ADD,OUT,0,XYZW);
 193         r300->hw.vpi.cmd[2] = VP_IN(IN,0);
 194         r300->hw.vpi.cmd[3] = VP_ZERO();
 195         r300->hw.vpi.cmd[4] = 0;
 196
 197         /* MOV o1, i1; */
 198         r300->hw.vpi.cmd[5] = VP_OUT(ADD,OUT,1,XYZW);
 199         r300->hw.vpi.cmd[6] = VP_IN(IN,1);
 200         r300->hw.vpi.cmd[7] = VP_ZERO();
 201         r300->hw.vpi.cmd[8] = 0;
 202
 203         R300_STATECHANGE(r300, zs);
 204         if (flags & CLEARBUFFER_DEPTH) {
 205                 r300->hw.zs.cmd[R300_ZS_CNTL_0] = 0x6; // test and write
 206                 r300->hw.zs.cmd[R300_ZS_CNTL_1] = (R300_ZS_ALWAYS<<R300_RB3D_ZS1_DEPTH_FUNC_SHIFT);
 207 /*
 208                 R300_STATECHANGE(r300, zb);
 209                 r300->hw.zb.cmd[R300_ZB_OFFSET] =
 210                         1024*4*300 +
 211                         r300->radeon.radeonScreen->frontOffset +
 212                         r300->radeon.radeonScreen->fbLocation;
 213                 r300->hw.zb.cmd[R300_ZB_PITCH] =
 214                         r300->radeon.radeonScreen->depthPitch;
 215 */
 216         } else {
 217                 r300->hw.zs.cmd[R300_ZS_CNTL_0] = 0; // disable
 218                 r300->hw.zs.cmd[R300_ZS_CNTL_1] = 0;
 219         }
 220
 221         /* Make sure we have enough space */
 222         r300EnsureCmdBufSpace(r300, r300->hw.max_state_size + 9, __FUNCTION__);
 223
 224         r300EmitState(r300);
 225
 226         cmd = (drm_r300_cmd_header_t*)r300AllocCmdBuf(r300, 9, __FUNCTION__);
 227         cmd[0].packet3.cmd_type = R300_CMD_PACKET3;
 228         cmd[0].packet3.packet = R300_CMD_PACKET3_CLEAR;
 229         cmd[1].u = r300PackFloat32(dPriv->w / 2.0);
 230         cmd[2].u = r300PackFloat32(dPriv->h / 2.0);
 231         cmd[3].u = r300PackFloat32(ctx->Depth.Clear);
 232         cmd[4].u = r300PackFloat32(1.0);
 233         cmd[5].u = r300PackFloat32(ctx->Color.ClearColor[0]);
 234         cmd[6].u = r300PackFloat32(ctx->Color.ClearColor[1]);
 235         cmd[7].u = r300PackFloat32(ctx->Color.ClearColor[2]);
 236         cmd[8].u = r300PackFloat32(ctx->Color.ClearColor[3]);
 237 }
 238
 239
 240 /**
 241  * Buffer clear
 242  */
 243 static void r300Clear(GLcontext * ctx, GLbitfield mask, GLboolean all,
 244                       GLint cx, GLint cy, GLint cw, GLint ch)
 245 {
 246         r300ContextPtr r300 = R300_CONTEXT(ctx);
 247         __DRIdrawablePrivate *dPriv = r300->radeon.dri.drawable;
 248         int flags = 0;
 249         int bits = 0;
 250         int swapped;
 251
 252         if (RADEON_DEBUG & DEBUG_IOCTL)
 253                 fprintf(stderr, "%s:  all=%d cx=%d cy=%d cw=%d ch=%d\n",
 254                         __FUNCTION__, all, cx, cy, cw, ch);
 255
 256         {
 257                 LOCK_HARDWARE(&r300->radeon);
 258                 UNLOCK_HARDWARE(&r300->radeon);
 259                 if (dPriv->numClipRects == 0)
 260                         return;
 261         }
 262
 263         if (mask & DD_FRONT_LEFT_BIT) {
 264                 flags |= DD_FRONT_LEFT_BIT;
 265                 mask &= ~DD_FRONT_LEFT_BIT;
 266         }
 267
 268         if (mask & DD_BACK_LEFT_BIT) {
 269                 flags |= DD_BACK_LEFT_BIT;
 270                 mask &= ~DD_BACK_LEFT_BIT;
 271         }
 272
 273         if (mask & DD_DEPTH_BIT) {
 274                 bits |= CLEARBUFFER_DEPTH;
 275                 mask &= ~DD_DEPTH_BIT;
 276         }
 277
 278         if (mask) {
 279                 if (RADEON_DEBUG & DEBUG_FALLBACKS)
 280                         fprintf(stderr, "%s: swrast clear, mask: %x\n",
 281                                 __FUNCTION__, mask);
 282                 _swrast_Clear(ctx, mask, all, cx, cy, cw, ch);
 283         }
 284
 285         swapped = r300->radeon.doPageFlip && (r300->radeon.sarea->pfCurrentPage == 1);
 286
 287         if (flags & DD_FRONT_LEFT_BIT) {
 288                 r300ClearBuffer(r300, bits | CLEARBUFFER_COLOR, swapped);
 289                 bits = 0;
 290         }
 291
 292         if (flags & DD_BACK_LEFT_BIT) {
 293                 r300ClearBuffer(r300, bits | CLEARBUFFER_COLOR, swapped ^ 1);
 294                 bits = 0;
 295         }
 296
 297         if (bits)
 298                 r300ClearBuffer(r300, bits, 0);
 299
 300         /* Recalculate the hardware state. This could be done more efficiently,
 301          * but do keep it like this for now.
 302          */
 303         r300ResetHwState(r300);
 304         /* r300ClearBuffer has trampled all over the hardware state.. */
 305         r300->hw.all_dirty=GL_TRUE;
 306 }
 307
 308 void r300Flush(GLcontext * ctx)
 309 {
 310         r300ContextPtr r300 = R300_CONTEXT(ctx);
 311
 312         if (RADEON_DEBUG & DEBUG_IOCTL)
 313                 fprintf(stderr, "%s\n", __FUNCTION__);
 314
 315         if (r300->cmdbuf.count_used > r300->cmdbuf.count_reemit)
 316                 r300FlushCmdBuf(r300, __FUNCTION__);
 317 }
 318
 319 void r300RefillCurrentDmaRegion(r300ContextPtr rmesa)
 320 {
 321         struct r200_dma_buffer *dmabuf;
 322         int fd = rmesa->radeon.dri.fd;
 323         int index = 0;
 324         int size = 0;
 325         drmDMAReq dma;
 326         int ret;
 327
 328         if (RADEON_DEBUG & (DEBUG_IOCTL | DEBUG_DMA))
 329                 fprintf(stderr, "%s\n", __FUNCTION__);
 330
 331         if (rmesa->dma.flush) {
 332                 rmesa->dma.flush(rmesa);
 333         }
 334
 335         if (rmesa->dma.current.buf)
 336                 r300ReleaseDmaRegion(rmesa, &rmesa->dma.current, __FUNCTION__);
 337
 338         if (rmesa->dma.nr_released_bufs > 4)
 339                 r300FlushCmdBuf(rmesa, __FUNCTION__);
 340
 341         dma.context = rmesa->radeon.dri.hwContext;
 342         dma.send_count = 0;
 343         dma.send_list = NULL;
 344         dma.send_sizes = NULL;
 345         dma.flags = 0;
 346         dma.request_count = 1;
 347         dma.request_size = RADEON_BUFFER_SIZE;
 348         dma.request_list = &index;
 349         dma.request_sizes = &size;
 350         dma.granted_count = 0;
 351
 352         LOCK_HARDWARE(&rmesa->radeon);  /* no need to validate */
 353
 354         while (1) {
 355                 ret = drmDMA(fd, &dma);
 356                 if (ret == 0)
 357                         break;
 358
 359                 if (rmesa->dma.nr_released_bufs) {
 360                         r200FlushCmdBufLocked(rmesa, __FUNCTION__);
 361                 }
 362
 363                 if (rmesa->radeon.do_usleeps) {
 364                         UNLOCK_HARDWARE(&rmesa->radeon);
 365                         DO_USLEEP(1);
 366                         LOCK_HARDWARE(&rmesa->radeon);
 367                 }
 368         }
 369
 370         UNLOCK_HARDWARE(&rmesa->radeon);
 371
 372         if (RADEON_DEBUG & DEBUG_DMA)
 373                 fprintf(stderr, "Allocated buffer %d\n", index);
 374
 375         dmabuf = CALLOC_STRUCT(r300_dma_buffer);
 376         dmabuf->buf = &rmesa->radeon.radeonScreen->buffers->list[index];
 377         dmabuf->refcount = 1;
 378
 379         rmesa->dma.current.buf = dmabuf;
 380         rmesa->dma.current.address = dmabuf->buf->address;
 381         rmesa->dma.current.end = dmabuf->buf->total;
 382         rmesa->dma.current.start = 0;
 383         rmesa->dma.current.ptr = 0;
 384 }
 385
 386 void r300ReleaseDmaRegion(r300ContextPtr rmesa,
 387                           struct r300_dma_region *region, const char *caller)
 388 {
 389         if (RADEON_DEBUG & DEBUG_IOCTL)
 390                 fprintf(stderr, "%s from %s\n", __FUNCTION__, caller);
 391
 392         if (!region->buf)
 393                 return;
 394
 395         if (rmesa->dma.flush)
 396                 rmesa->dma.flush(rmesa);
 397
 398         if (--region->buf->refcount == 0) {
 399                 drm_radeon_cmd_header_t *cmd;
 400
 401                 if (RADEON_DEBUG & (DEBUG_IOCTL | DEBUG_DMA))
 402                         fprintf(stderr, "%s -- DISCARD BUF %d\n", __FUNCTION__,
 403                                 region->buf->buf->idx);
 404
 405                 cmd =
 406                     (drm_radeon_cmd_header_t *) r300AllocCmdBuf(rmesa,
 407                                                                 sizeof(*cmd),
 408                                                                 __FUNCTION__);
 409                 cmd->dma.cmd_type = RADEON_CMD_DMA_DISCARD;
 410                 cmd->dma.buf_idx = region->buf->buf->idx;
 411                 FREE(region->buf);
 412                 rmesa->dma.nr_released_bufs++;
 413         }
 414
 415         region->buf = 0;
 416         region->start = 0;
 417 }
 418
 419 /* Allocates a region from rmesa->dma.current.  If there isn't enough
 420  * space in current, grab a new buffer (and discard what was left of current)
 421  */
 422 void r300AllocDmaRegion(r300ContextPtr rmesa,
 423                         struct r300_dma_region *region,
 424                         int bytes, int alignment)
 425 {
 426         if (RADEON_DEBUG & DEBUG_IOCTL)
 427                 fprintf(stderr, "%s %d\n", __FUNCTION__, bytes);
 428
 429         if (rmesa->dma.flush)
 430                 rmesa->dma.flush(rmesa);
 431
 432         if (region->buf)
 433                 r300ReleaseDmaRegion(rmesa, region, __FUNCTION__);
 434
 435         alignment--;
 436         rmesa->dma.current.start = rmesa->dma.current.ptr =
 437             (rmesa->dma.current.ptr + alignment) & ~alignment;
 438
 439         if (rmesa->dma.current.ptr + bytes > rmesa->dma.current.end)
 440                 r300RefillCurrentDmaRegion(rmesa);
 441
 442         region->start = rmesa->dma.current.start;
 443         region->ptr = rmesa->dma.current.start;
 444         region->end = rmesa->dma.current.start + bytes;
 445         region->address = rmesa->dma.current.address;
 446         region->buf = rmesa->dma.current.buf;
 447         region->buf->refcount++;
 448
 449         rmesa->dma.current.ptr += bytes;        /* bug - if alignment > 7 */
 450         rmesa->dma.current.start =
 451             rmesa->dma.current.ptr = (rmesa->dma.current.ptr + 0x7) & ~0x7;
 452
 453         assert(rmesa->dma.current.ptr <= rmesa->dma.current.end);
 454 }
 455
 456 /* Called via glXGetMemoryOffsetMESA() */
 457 GLuint r300GetMemoryOffsetMESA(__DRInativeDisplay * dpy, int scrn,
 458                                const GLvoid * pointer)
 459 {
 460         GET_CURRENT_CONTEXT(ctx);
 461         r300ContextPtr rmesa;
 462         GLuint card_offset;
 463
 464         if (!ctx || !(rmesa = R300_CONTEXT(ctx))) {
 465                 fprintf(stderr, "%s: no context\n", __FUNCTION__);
 466                 return ~0;
 467         }
 468
 469         if (!r300IsGartMemory(rmesa, pointer, 0))
 470                 return ~0;
 471
 472         if (rmesa->radeon.dri.drmMinor < 6)
 473                 return ~0;
 474
 475         card_offset = r300GartOffsetFromVirtual(rmesa, pointer);
 476
 477         return card_offset - rmesa->radeon.radeonScreen->gart_base;
 478 }
 479
 480 GLboolean r300IsGartMemory(r300ContextPtr rmesa, const GLvoid * pointer,
 481                            GLint size)
 482 {
 483         int offset =
 484             (char *)pointer - (char *)rmesa->radeon.radeonScreen->gartTextures.map;
 485         int valid = (size >= 0 && offset >= 0
 486                      && offset + size < rmesa->radeon.radeonScreen->gartTextures.size);
 487
 488         if (RADEON_DEBUG & DEBUG_IOCTL)
 489                 fprintf(stderr, "r300IsGartMemory( %p ) : %d\n", pointer,
 490                         valid);
 491
 492         return valid;
 493 }
 494
 495 GLuint r300GartOffsetFromVirtual(r300ContextPtr rmesa, const GLvoid * pointer)
 496 {
 497         int offset =
 498             (char *)pointer - (char *)rmesa->radeon.radeonScreen->gartTextures.map;
 499
 500         fprintf(stderr, "offset=%08x\n", offset);
 501
 502         if (offset < 0 || offset > rmesa->radeon.radeonScreen->gartTextures.size)
 503                 return ~0;
 504         else
 505                 return rmesa->radeon.radeonScreen->gart_texture_offset + offset;
 506 }
 507
 508 void r300InitIoctlFuncs(struct dd_function_table *functions)
 509 {
 510         functions->Clear = r300Clear;
 511         functions->Finish = radeonFinish;
 512         functions->Flush = r300Flush;
 513 }